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Re: [Xen-devel] Problem setting up a custom GDT
| To: | Simon Kagstrom <simon.kagstrom@xxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Problem setting up a custom GDT |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Fri, 9 Jun 2006 12:10:31 +0100 |
| Cc: | xen-devel list <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Fri, 09 Jun 2006 04:10:50 -0700 |
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| In-reply-to: | <8764jalhgb.wl%simon.kagstrom@xxxxxx> |
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| References: | <8764jalhgb.wl%simon.kagstrom@xxxxxx> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
On 9 Jun 2006, at 12:03, Simon Kagstrom wrote: (The GDT Is just copied from Linux' right now). When doing this, I always get -EINVAL from set_gdt, which I suspect is because HYPERVISOR_update_va_mapping for some reason does not succeed in setting the page read-only. I've checked the Linux implementation, and it does basically the same thing (pte_wrprotect() on the machine-address before calling update_va_mapping). Does anyone see what is wrong here? Is your GDT page-aligned and -padded. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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